Xuyuan E. Ai

Jan 30, 2024 | insu.hal.science | Xuyuan E. Ai |Alexandra Auderset |Simone Moretti |Mareike Schmitt

The southward migration of the Antarctic Circumpolar Current enhanced oceanic degassing of carbon dioxide during the last two deglaciations Origine : Fichiers éditeurs autorisés sur une archive ouverte

Jan 29, 2024 | nature.com | Xuyuan E. Ai |Lena Thöle |Simone Moretti |Anja S. Studer |Daniel M. Sigman |Alfredo Martínez-García

AbstractPrevious studies suggest that meridional migrations of the Antarctic Circumpolar Current may have altered wind-driven upwelling and carbon dioxide degassing in the Southern Ocean during past climate transitions. Here, we report a quantitative and continuous record of the Antarctic Circumpolar Current latitude over the last glacial-interglacial cycle, using biomarker-based reconstructions of surface layer temperature gradient in the southern Indian Ocean.

Oct 16, 2023 | frontiersin.org | Shanghai Jiao Tong |Xu Zhang |Yunhai Li |Xuyuan E. Ai

1 IntroductionThe Southern Ocean covers approximately 20% of the global ocean area, accounts for 30–40% of the global oceanic net CO2 absorption and serves as an important carbon sink region (Gao et al., 2001).